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3 years ago

Please Help! I can’t figure this question out! Question is in the pic below..

Mathematics

1 answer:

padilas [110]3 years ago

4 0

The answer is 68!!!!!!!!!

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Salaries of entry-level computer engineers have Normal distribution with unknown mean and variance. Three randomly selected comp

avanturin [10]

Answer:

H0 : μ = 60000

H1 : μ ≠ 60000

Test statistic = 3.464

Step-by-step explanation:

Given :

Sample mean salary, xbar = 80000

Sample standard deviation, s = 10000

Population mean salary , μ = 60000

Sample size, n = 3

Hypothesis :

H0 : μ = 60000

H1 : μ ≠ 60000

The test statistic :

T = (xbar - μ) ÷ (s/√(n))

T = (80000 - 60000) ÷ (10000/√(3))

T = 20000 / 5773.5026

T = 3.464

The Decison region :

If Tstatistic >Tcritical

Tcritical at 10%, df = 2 ; two - tailed = 2.9199

Tstatistic > Tcritical ; He

5 0

3 years ago

PLZZZZZZZZZ HELPPPPPPPPPPPPPPPPP

slavikrds [6]

Answer:

i need points sorry

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Two paper drink cups are shaped like cones. The small cone can hold 6 oz of water. The large cone is 4/3 the height and 4/3 the

Ivahew [28]

B is the answer 14 is

6 0

4 years ago

Read 2 more answers

A 100-gram sample of a radioactive isotope decays at a rate of 6% every week. How much of the sample will be left one year from

Dvinal [7]

4 grams sample will be left after 1 year

Step-by-step explanation:

The decay function for percentage decay is given by:

$y =a (1-r)^x$

Here,

a is the initial value

r is the rate

x is the number of time periods

Given

Initial value = 100 grams

Rate = 6% = 0.06

Time = 1 year = 52 weeks

Putting the values in the formula

$y = 100 (1-0.06)^{52}\\y = 100(0.94)^{52}\\y = 4.00\ grams$

Hence,

4 grams sample will be left after 1 year

Keywords: Decay, percentage

Learn more about decay functions at:

#LearnwithBrainly

7 0

3 years ago

PLEASE SOMEONE HELP ASAP!!!!!!!!!!!

Volgvan

The second and fourth one are rational. They are perfect squares and are terminating or are fractions

4 0

3 years ago